Break-pin device for cultivators



July 1927' c. G. SIGURD BREAK PIN DEVICE FOR CULTU IATORS Filed July 6. 1926 aft-er fully described and standard showing the frame are cultivator Patented July 12, 1927..

UNITED TATES ATENT I CARL G. SIGURD, OF SAN zro sn, oALrronNIA.

BREAK-PIN DEVICE FOR CULTIVATORS.

Application filed. m a,

- reak p111 device according to this invention. Fig. 2 is a plan view of the same. Fig. 3 is a rear end View of the upper part of the bars in section.

The frame 6 of the machine is of any approved form and construction, and is mounted on ground wheels in the usual way. Brackets 7' are secured to the frame at suitable points longitudinal and parallel bars 8. The frame has as many of these pairs of bars as there blades, butonly one pair is shown as they are all substantially alike.

1 upwardly Each cultivator blade 9 is secured to a standard or shank 10, and the upper end portion of this standard is pivoted on a pin 12 between the two bars 8 of the frame. An and forwardly projectingjarm 141 is provided at the top of the standard, and projects above the level of the tops of the bars 8. This arm has awoodenfpin15 arranged in a notch or hole 16 in itslower part, and this pin extends crosswise over the two bars 8, and normally prevents the blade 9 from being turned .backwardly on the pivot 12. 7 I I A notch 17 is also provided in the upper part of the arm lt. A hook-shaped pawl 18 is pivoted by a pin 19 to the bars 8,:in front of thestandard, andthe hooked end portion of this pawl normally engages with, the notch 17 andtprevents the blade from being so as to form with it a pair of 1926. Serial no izonse,

moved forwardly, so that the machine works with the cultivator blades held in theirpreferred positions.

When thecultivator blade strikes a stone or other obstacle with sufficient force to break the pin 15, the standard turns backwardly on its pivot and no injury is done to 1,,azl

the machine; The frame is not weakened by making holes in it for the break pins, and when a pin breaks its end p-ortlonsare not ammed in holes in the frame, and it is much easier to replace the broken pin with a new 1 pin when the new pin has I merely to be slipped 1nto the notch 16 and does not have to be fitted into any pin holes. Any culti-' vator blade can also be placed out of action by merelydisengaging the pawl pertaining to it, as the break pin does not have to be broken or extracted from any holes in the frame.

, hat I claim is: I Y a 1.'T he-c0mbination, with a frame, of a standard pivoted to the frame and provided at its upper end with an arm whicliiprojects forwardly and above the top of the-frame, a

break pin arranged crosswise of and sup' porting the said arm and resting on'the top of the frame, and a liook shaped pawl piv oted to :thefframe and normally engaging with the'ss'aid arm and'preventing it from rising;

' 2. ,Th'e combination, withfa frame having two parallel longitudinal. bars, of a standard pivoted'between the bars and provided."

.at its upper end with an arm which projects forwardly and above the bars, said arm having a notch in its lower side and another notch in its upper side, a break pin inserted in the lower'notch and resting on the said bars, and a hook-shaped retaining'pawl pivoted to the bars in front of the standard and engaging with the upper notch; i i

Intestimony whereof I have afiixed 'my signature.

.oAnL e. srsuien. 

